Engine, air-pump, &amp;c.



P. W. MAGHLET.

ENGINE, AIR PUMP, 6w.

APPLICATION FILED OCT. 22, 1908.

1,1 1 9,972. Patented Dec. 8, 1914.

4 SHEETS-SHEET 1.

l vi/imeooao; wvc H106 mm & 1 M6 6/ m F. W. MAOHLET.

ENGINE, AIR PUMP, 6w. APPLICATION FILED 0M. 22, 1908.

Patented Dec. 8, 1914 4 SHEETBSHEET 2.

F. W. MAGHLBT.

ENGINE, AIR PUMP, 6w. APPLIOATION FILED OCT. 22, 1908.

1,1 1 9,972, v Patented Dec. 8, 1914 4 SHEETS-SHEET 3.

F W. MACHLET. ENGINE, AIR PUMP, m. APPLICATION FILED DOT. 22, 190B.

Patented Dec. 8, 1914.

4 SHEETS-SHEET 4.

VENTOH WITNESSES.

UNITED STATES PATENT OFFICE.

' FRITZ W. MACHLET, OF ELIZABETH, NEW JERSEY.

ENGINE, AIR-PUMP, &0.

Application filed October 22, 1908.

To all whom it may] concern: 1

Be it known that I, FRITZ W. MAGHL T, a citizen of the United States, residing in Elizabeth, in the county of Union and State of New Jersey, have invented certain new and usefullmprovements in Engines, Air- Pumps, &c., of which the following is a specification.

This invention relates principally to means for employing liquid to seal or pack and lubricate pistons of engines operated by steam, gas, compressed air, etc., especially those of the rotary type, and also the pistons of air pumps, gas pumps, blowers, etc.

In my pending United States application No. 448,785 filed August 17, 1908 is illustrated a device for causing approximately constant flowof oil or other sealing and lubricating liquid to the edge or edges of the piston or pistons of a rotary engine to seal said pistons sufficiently to makeit practicable to operate them with steam, compresed air or gas of sufliciently'high pres-- sure to secure economical results. In said application the operation of pumping or forcing the sealing liquid to the edges of the pistons was performed by the tips of the pistons themselves, each of said tips scooping out a small quantity of liquid from a well, and forcing it to'circulate ultimately through the body of the pistons to their edges.

According to the present invention, the sealing liquid is pumped by an outside pump, and forced into the main engine or air pump and into the pistons to seal their edges.

This improvement is shown in connection with the type of engine or pump shown in my other pending application No; 421,689, filed April 1, 1908 in which the pistons are of the intergeared type.

The shafts of the pistons of the main engine or air pump are extended outside of the cylinder or drum of the engine, and on the shafts are fixed intergeared pistons revolving in a casing to constitute a liquid pump, openings or ports extending from the delivery side of the liquid pump through a head of the main pump in position to permit the liquid to flow into the main pistons.

There is also provided upon the delivery side of the main engine'or air pump a separator for the liquid carried out with the exhaust or delivery, and a collector for the separated liquid; and a pipe leads from the Specification of Letters Patent.

Patented Dec. 8, 1914.

Serial No. 458,953.

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a transverse sectional elevation of one form of blower or compressor, or steam, air or gas engine, to which my improvements are applied, the pistons being shown full of the sealing liquid. Fig. 2 is a longitudinal section of the same. Fig. 3 is afront elevation of the engine from which the cap of the liquid pump has been removed. Fig. 4 is a perspective view of thathead of the main drum which forms a part of the casing for the liquid pump; the same being shown partly broken away, to illustrate the openings or ports leading from the liquid pump through said head. Fig. 5 is a sectional plan of the apparatus.

lVithin a drum 1, comprising two opposed C-shaped segments 2, 3, revolve pistons 4, 5, each having, for instance, six lobes or vanes 6 to intergear with the lobes of the other piston. Each piston is chambered and preferably made in the form of a shell, whose convolutions are united by a web 7 to a hub 8. By means of said hubs, the pistons are secured upon shafts 9, 10, respectively, the shaft 10 carrying a fly-wheel or pulley 11.

The liquid for sealing and lubricating the pistons is seen at 12 within a separator 13 of any suitable type, and conveniently erected .upon the top or delivery side of the pump directly over the delivery orifice 14 thereof. The separated and collected liquid is drawn from the collector 15 down through a pipe 16 to the intake side of the liquid pump.

tively on the front ends of the shafts 9 and 10, which project forwardly through said head 21. It will be seen that the supply pipe 16 leads down in front of thepnmp, and leads into the bottom or intake of the pump.

In the upper part of. the head 21, or at the delivery side of the liquid pumpf'is formed an opening 22 *t'rom which branch passages 23 and 24, said passages diverging downwardly in said head, and terminating "at their ends respectively in ports 25-, 26, formed in the rear side of said head 21; said ports being arched, so as always to be within the contour-of the main pistons 4, 5, to permit the liquid to fiow from the auxiliaryset forth in said application No. 424,689, the end of each hub is cut away to form an open passage'28 uponthe end thereof, adjacent to each of the ports25, 26, so "as to increase the facility of communication between each port and all of the-chambers orholes in its associated piston. The opposite'end of each hub may'also be cut away, as at 29, to promote the ,flow of liquid through the piston.

The drip from the pistons and the walls of the main engine is caught in a basin 30- formed below the intake orifice 31 thereof, so that the accumulated drip, seen at 32, may betaken up bythe steam, air or gas, which enters through the inlet pipe 33, and delivered to the lobes or vanes of the pistons, as indicated at 34, to be sweptaround thereby, as-at 35; the films of liquid forming between the tips or ends of the vanes and the inner peripheryof the segments 2,3 of the drum. These films are sufiicijent to prevent leakage of air or gas. Each film afl'ords a substantial obstacle to leakage; and when the lobes of each piston are numerous, as illustrated, so that there are'always three or four films around the drum between the delivery and 'intake sides thereof, loss of air pressure through leakage is practically avoided; and the same holds true as to the sides of the pistons, there being always many film's at the side edges to cooperate to preyent loss of compressed air.

At Fig.1, the particles of liquid are indi- Gated atl36 in'the column of ascending air or steamj and' it will be understood that said particles may sometimes settle between the intermeshing lobes, as at 37, to join the liquid 35 swept around by the tips of the pistons, which forms seals between the inter'xneshing convoluticns of the pistons, so that leaking of air through such intermesh- .ing portions is minimized or avoided,

It will thus be seen that a constant clrcuanaaaa I lationof the liquid is maintained from the separator 13 throughthe pump and engine.

and back to the separator. l

To avoid any dilliculty that might arise 'from excessive liquid pressure efl'ected by the liquid'pump, there may be provided a reliefinthe form-of a pipe 38 leading up from the'deliveryside of the liquid pump, and then down to thewell 30 in the main engine or a'ir'pump}; this bypass taking care of any surplusliquid that may be pumped ,from the collector 1-5, The pipe 38 extends up to give a suflicient head to insure a --proper flow of the liquid into the hollowed or perforated pistons; If desired, the relief pipe 38 may lead to the intake'side of the liquid pump; although the illustrated con- ,struction is prefer-red. -Pipe '38 may in some cases be provided with a back check valve 38. V lln the boss or bearing 40 carrying the mainshaft 10' is formed an interior recess 41 around the shaft, and a pipe 42 leads from said recess to the'intake side of the H liquid pump, thus insuring that a film of liquid shall tend to flow out from the main pump, and constantly surround the shaft 10' in the bearing to form aseal to prevent leakage ofsteam, air or gas.

Variations may be resorted to Within the scope of the invention, and portions of the Having thus described my invention, I claim: a

said passage, for forcing liquid through the piston to its edge to seal and lubricate the same, a.- joint. being provided between a part of the piston that contains said internal improvements-may be used without others.

- ,1. The combination withv a rotary air or passage, and a stationarypart' of the pump or engine, said joint having a passage in communication with both said exterior pump and the internal, passage in' said piston.

sive of a cylinder 'ordrum, and, also having a rotary piston provided with an internal or closed passage, of means, including ,a

drum for forcing liquid or lubricant into The combinationgwith airotary air or gaspump or engine having a casingincluthe pistons to cause it to exude from the edges of the pistons toform seals rot packings therefor; said liquid pump .oomprlsing a pair of intergeared pistons connected respectively to the pistons in the main engine or pump.

l. A rotary engine, gas or air pump or blower comprising a drum, intergeared hllow or perforate pistons revolving within the drum, a pump exterior to said drum for forcing liquid or lubricant into the pistons to cause it to exude from the edges of the pistons to form seals or packings therefor; said liquid pump comprising a pair of intergeared pistons connected respectively to the pistons in the main engine or pump, and a casing in which said liquid-pump pistons revolve'being provided upon the drum of the main engine or pump.

5. A'rotary engine, gas or air pump or blower comprising a drum, intergeared hollow or perforate pistons revolving within the drum, and a pump exterior to said drum for forcing liquid or lubricant into the pistons to cause it to exude from the edges of the pistons to form seals or packings therefor; said liquid pump comprising a pair of intergeared pistons, the pistons in the main engine or pump being provided with shafts, and the liquid-pump pistons being fixed upon said shafts.

6. A rotary engine, gasor air pump or blower comprising a drum, inter-geared hollow or perforate pistons revolvin within the drum, a pump exterior to said rum fdr forcing liquid or lubricant into the pistons to cause it to exude from the edges of the .35 pistons to form seals or packings therefor;

said liquid pump comprising a pair of intergeared pistons connected respectively to the pistons in the main engine or pump, a casing in which said liquid-pump pistons revolve being provided upon the drum of the main engine or pump, and means upon the delivery side of the 'main engine or pump to separate and collect the liquid, said collecting means being in communication with the intake side of the liquid pump.

7. The combination with an air or gas pump or engine, having a cylinder or drum, and a piston therein of means, including a pump exterior to the drum, for forcing liquid to the edges of the piston to seal and lubricate the same, the main engine or pump including a shaft carrying a wheel or pulley, and mounted in a bearing provided with an interior recess, a duct for .55 surplus liquid leading from said recess to the intake side of said liquid pump.

8. A rotary engine, gas or air pump or blower comprising a drum, intergeared hollow or perforate pistons revolving within the drum, a pump exterior to said drum for forcing liquid or lubricant into the pistons, to cause it to exude from the edges of the pistons to form seals or packings therefor, and openings or ports leading from the deliverv side of the liquid pump through a head of said drum to the interior of the main engine or pump, to supply the liquid to its pistons.

9. A rotary engine, gas or air pump or blower comprising a drum, intergeared hollow or perforate pistons revolving within the drum, a pump exterior to said drum for forcing liquid or lubricant into the pistons,

to cause it to exude'from the edges of the pistons to form seals or packings therefor, and openings or ports leading from the delivery side of the liquid pump through a. head of said drum to the interior of the main engine or pump, to supply the liquid to its pistons; said openings or ports haying such positions as to be constantly within the contours of the main pistons.

' 10. A rotary engine, gas or air pump or blower comprising a drum, inter-geared hollow or perforate pistons revolving within the drum, a pump exterior tosaid drum for foroing liquid or lubricant into the pistons, to cause it to exude from the edges of the PIS- tons to form seals or packings therefor, and openings or ports leading from the delivery side of the liquid pump through a head of said drum to the interior of the mam engine or pump, to supply the liquid to its pistons; said openings or ports branching from a single opening at the delivery side of said liquid pump and leadlng one to each of said pistons.

11. The combination with a mam rotary engine, air or gas pump, or blower, comprising a drum and a hollow or perforate piston revolving upon a support within the drum, of a liquid pum exterior to the drum, and a passage lea ing from the delivery side of saidexterior pump to the support portion of said piston, to permit liquid from the liquid pump to flow through the piston to its edges to seal and lubrlcate the same.

12. The combination with a main rotary engine, air or gas pump, or blower, comprising adrum and a hollow orperforate piston revolving upon a support within the drum, of a liquid pump exterior to the drum, a passage leading from the delivery side of said exterior pump to the support portion of said piston, to permit liquid from the liquid pump to flow through the piston to its edges to seal and lubricate the same, and a collector on the delivery side of the main engine in communication with the intake side of said liquid pump.

13. The-combination with a main air or gas pump or engine having a cylinder or drum, of means, including a pump exterior to the drum, for forcing liquid to the edges of the piston to seal and lubricate the same, and a by-pass extending from the delivery side of said liquid pump to the intake side i of one of said pumps.

14. The combination with .an air or gas pump orengine having a cylinder or drum, of means, including a ump exterior to the drum, for forcing liquid to the edges of the.

piston to seal and lubricatethe same, and a by-pass extending from the delivery side of said liquidpump to the intake side of said main pump or engine.

15. The combination with a main air or gas pump or'engine having a cylinder or drum, of means, including a pump exterior to the drum, for forcing liqiiid to the edges of the piston to seal and lubricate the same, and a by-pass extending from the delivery side of said liquid pump to the intake side of said main pump or engine, said by-pass being in the form of a pipe rising from said delivery side well above the piston of the main engine or pump, to give suficient head to the liquid to cause it to flow through the piston in said main ngine or pump.

16. The combination with a rotary air or gas-pump or engine, having a cylinder or drum, and a rotary piston device mounted upon a shaft device and having an internal or closed passage, of means including a pumping device also mounted on said shaft device exterior to the drum, and in communication with said passage, for forcing upon a shaft device and having an internal or closed passage, of means including a pumping device also mounted" on said shaft device exterior o the drum and in communication' with said passage, for forcing liquid through the piston to its edge to seal may be taken up the same, said engine comprising a casing which is inclusive of said cylinder or drum, and said exterior pumping device being contained within said casing.

18. The combination with a rotary gas pump or engine, having an induction orifice and having acylinder or drum, and; also having a rotary piston provided With a. passage, of means for causing liquid to flow through the piston to its edge to seal and lubricate the same,- said enginepro vided with a well 30 below the induction orifice to take up the accumulation of drip.

from the piston, whereby said accumulation by-thefluid entering said cylinder or drum j l 19. The combli' mien-tr a rotary air or gas'pump-or engine having 'a cylinder or drum, and also having a rotary piston device'provided with an internal or closed passage, said cylinder or' drumv having a port 1n communication with said passage, and

" means at the delivery side of} the pump or engine to separate and collect [the sealing liquid; means being provided for causing a closed circulation of the sg liquid lecting means.

through said port, said piston and said -col- 20. The combination of intergeared pis- -tons provided with internal 'or"closed passages, a drum in which they are mounted, said drum having a port in communication with said passages, and means at the delivery side of the pistons to separate and collect the sealing liquid; means being provided for causing a closed circulation of the sealing liquid through said port, said pistons and said collecting means.

21. The combination of intergeared pistons provided with internal or closed pascausing a closed circulation of the sealing liquid through said port, said piston and said collecting means. a

22. A rotary engine gas or air pump or blower, comprising a drum, intergeared pistons revolving within the drum,and having internal or closed passages open at the ends ofthe'piston for sealing liquid, said drum having a port in open communication with the passages or openings inboth of said pistons, and means at the delivery side of the pistons to separate and collect the sealing liquid; means being provided for causing a closed-circulation of the sealing liquid through said port, said piston and said collecting means.

v 23. A rotary engine, gas or air pump or blower comprising a drum, intergeared hollow or p'erforate pistons revolving within the drum and open at their ends, a pump exterior to said drum for forcing liquid or lubricant, and means to conduct the liquid from the pump into the pistons, to cause it to exude from the edges of the pistons to form seals or packings therefor.

passage in the piston to pump the separated liquid from said collecting means through said piston to its ends or'edges.

' 25. A rotary air or gas pump or engine, comprising a drum having walls, a piston therein, said piston. having ends revolving in contact with said w and having an internal or closed passage for sealing fluid, a closed circulation of the sealing fluid to said passage having openings at the end of flow through said port, said piston passage the piston, said drum having a port in open and said collector.

communication with said openings and pas- FRITZ W. MACHLET. sage, and means upon the delivery side of Witnesses: the piston for separating and collecting the SAMUEL R. OGDEN,

sealing fluid: means being provided to cause PHILIP C. ()sTEnMAN. 

